Machine for flanging steam-boiler heads



(No 00191. 3 ShetsSheet 1. v F. L. KOLLBERG.

MACHINE FOR FLANGING STEAM BOILER HEADS. No. 317,145. Patented May 5, 1885.

WITNESSES INVENTOR ATTORNEY WWW (N0 Model a Slieets-Sheet 2.

F. L. KOLLBERG.

'MAGHINB FOR FLANGING STEAM BOILER HEADS.

No. 317,145.- Patented May5,1l885.

WITNESSES: INVENTOR Z'M ATTORNEY (No Model.) 3 Sheets-Sheet 3.

P. L. KOLLBBRG.

MACHINE FOR PLANGING STEAM BOILER HEADS. No. 317,145. Patented May 5, 1885.-

d MM f WITNESSES l a I By Afforney N. PETER$, Hww-Lnno hu. Waihinglnu. u. c,

. UNITED STATES rnnnnrox L. KOLLBERG, OF OHIOAGQ'ILLINOIS.

MACHINE FOR FLANGING STEAM-BOILERHEADS.

SPECIFICATIOII forming partpf Letters Patent No. 317,145, dated May 5, 1885.

Application filed October 10, 1884. (No model.)

. To all whom it may concern:

operation.

Be it known that I, Fnnnnrox LEONARD KOLLBERG, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Machines for Flanging Steam-Boiler Heads; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Heretofore when heads of steam boilers were being flanged it was necessary, after being cut in the form of a circular plate heated to a white heat and placed on the bed-plate preparatory to being flanged, to find the center thereof before commencing the fianging This frequently causes a delay during which the plate cools and has to be reheated. After the center of the head-plate is found a hole has to be driven through it for theinsertion of a pivotal pin, around which the plate is revolved by contact with the flanging-rollers as the bed-plate of the machine is gradually brought from a horizontal to a vertical position. The pivotal hole thus made in the head'plate is liable to weaken the same, although it is afterward plugged with a rivet; and, moreover, its location frequently inconveniences theboiler-maker when making holes therein for the insertion of the boiler-fines.

The object of my invention is to supply means for centering the plate on the bed-plate of the machine,which avoids the necessity for perforating the same, and means for advancing the bed-plate to or withdrawing it from the flanging-rollers, whereby the machine may be adapted for flanging heads of a greater or less diameter; and it consists in radially-adjustable dogs operating in radial slots in the bed-plate, a screw-shaft for advancing or with drawing the bed-plate, substantially as hereinafter more fully explained, and as illustrated in the drawings, in which- Figure 1 is a side elevation of my machine. Fig. 2is an end view thereof. Fig. 3 is a plan view of the bed-plate. Fig. 4 is a vertical longitndinal section of the bed-plate. Fig. 5 is a detail'view. Figs. 6 and 7 are detail views showing the bearings of the roller-shafts.

In the drawings, A represents a rectangular open frame having pivotal studs a a projecting laterally from the inner corners thereof nearest the flanging-rollers, which are jour-. naled in suitable bearings in the ends of the horizontal arms of the vertical inverted-L- shaped frames B. These frames B are connected by a horizontal cross-frame, B, upon which the side bars of the rectangular frame A rest when the same is in a horizontal position. Resting on this rectangular frame A is the bed-plate 0, having a central circular boss, 0, extending downward from its under surface, and having a central pivoting-pin, c, seated in said boss, the head of which projects above the upper surface of said plate 0, and is serrated, so as to hold a head-plate firmly when it is centered and pressed downward thereon.

Pivoted in and between suitable lugs projecting upward from one side of the said bedplate and extending laterally over the same in such position as to pass immediately over said pivoting-pin c is a clamping-bar, D. The end of this bar D opposite to where it is piv oted is slotted or bifurcated, and is clamped down to hold a head-plate While the same is being flanged by means of an oscillating screw,

D, pivoted to the continguous side of the bedplate,which can be swung upwardly between the arms of the bifurcated end of said bar 1),;

and by means of a suitable nut hold the said bar down.

Pivoted in and extending downward from the under surface of the bar D, immediately] over and in alignment with pin 0, is ailikepin, d, the bearing-surface of which is similarly serrated. When the head-plate of the boiler has been entered by the means to be hereinafter described, it is placed between thesetwo pins, its center being in vertical alignment with the pivotal centers of the said pins.

In order to center the head-platethat is,

make its center coincide with those of the pivoting-pins c and d-I make in the bedplate the slots 6 c e c, radiating in different directions from the pivotal center of the pin c. Adjustable radially in these slotsare thedogs E,having a shoulder or tooth extending above the bed-plate, so that they will as they advance at an equal rate in said slots push the said plate until its center corresponds to that of pin 0.

- These dogs have bosses,to which the shoulders above referred to are connected by aneck, which are tapped longitudinally and engaged by the screws F, the inner ends of which are journaled in the boss 0 of the bed-plate, and the outer ends in suitable hangers depending from the under surface of the plate C. These screws all have pinions f near their inner bearings which mesh with and are driven by thelarge beveled gear G, journaled on the boss 0, as shown, in alignment with pins 0 and d,- and the gear G is driven by one of the screws F, which has its outer end, F, extended through its outer bearing and an elongated horizontal .slot in the rectangular frame A, where a crank can be slipped over it and the same thereby operated.

J ournaled in a suitable frame, H, at right angles to the pivotal line of the bed-plate O and contiguous to theinner edge is the driveshaft L having on the end adjacent to said plate 0 the flanging-roller t, the uppermost point of the periphery of which is on a plane just above that of the upper surface of the said bed-plate. The inner end of the drive-shaft is journaled in ajournal-box in the frame J, and on its extremity beyond this frame J is placed a large gear or pulley, by means of e H and being connected to said journal-box which motion is imparted to it.

That portion of the frames H and J above the bearings of the shaft I is divided into two vertical arms, between which are placed the vertically-adjustable j ournal-boxes H and J, in which is j ournaled the shaft K. This shaft K is arranged parallel with and in the same vertical plane as shaft I, and it has on its end nearest the bed-plate a flanging-roller, 7c, simi lar in every respect to roller a on the contiguous end of said shaft I. It is between these two rollers z and that the edge of the heated and circular head-plate is placed preparatory to being flanged. The shaft K between its bearings is provided with a pinion, k, which meshes with and derives motion from a similar gear, '6 on the drive-shaft I.

The upper portion of the frame H, between the arms of which the journal-box H is vertically adjustable, describes a segment of a circle struck from the journal-box J, which latter has that portion in which the j ournal of the said shaft K rests swiveled, so that the end of the shaft having thereon the roller is may be oscillated vertically by means of the lever L, pivoted at one end between the arms m m, extending obliquely upward from the frame H by a pitman or link, it.

It will be observed that in order to flange head-plates of various diameters, and in order that the circumferential edges of the same when properly centered may come between the flanging-rollers i and k, the centering-pins c and (I will have to be advanced toward or withdrawn from the said rollers, according as the diameter of the head-plate may require.

To do this I have j ournaled in the end pieces of the rectangular frame a screw, N, running longitudinally and centrally between the sides of said frame A, and having its outer end extend beyond its bearingsand adapted to receive the boss of a suitable crank by which it is turned. This screw passes through boss G of the bed-plate, which is tapped to receive the same, and according as the screw is turned to the right or left the bed-plate is advanced to or withdrawn from the flanging-rollers.

In order that the plate 0 may not as it advances interfere with the flanging-rollers it is cut away at n, as shown in the drawings.

The bed-plate being very heavy cannot ortherefore, a derrick or other hoisting device may be used, which may, as preferred, be operated by hand or steam power. I do not, however, lay particular claim to the bed-plateelevating devices; nor do I wish to be understood as claiming invention for the means for applying power to the roller, as various ways may be adopted.

In operation my invention operates substantially as follows: Theplate is cut to the required diameter, then placed in a furnace and heated to a white heat, and then placed on the bed-plate and centered by the centering devices. The clamping-bar is then swung downward and secured by the screw and nut thereon, as described, after which the bed-plate is advanced to or withdrawn from the flanging-rollers until the edges of the head-plate are properly between the said rollers. Power is then applied to the drive-shaft, and as the rollers revolve and turn the head-plate the 'dinarily be lifted by hand. For this purpose,

bed-plate upon which the latter is centered is gradually lifted from a horizontal to a perpendicular position, thus flanging the said headplate. After the head-plate has been flanged and the bed-plate is being swung to'its normal position, the lever L is manipulated to lift the journal-box in which is journaled the end of the shaft K, carrying roller 70, so that the flanged portion of the head-plate may escape from between the said flanging-rollers without being injured. The head-plate is then removed and the machine is ready for another operation.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a vertically-oscillating bed-plate having slots therein radiating from the center thereof, of the dogs adjustable radially in said slots, as hereinbefore set forth.

2. In a steam-boiler-head-flanging the combination of the bed-plate, the radially-adj ustable dogs moving in slots radiating from the center of said bed-plate, and the clamping-bar, as set forth.

3. In a boiler-head-flanging machine, the combination,with a vertically-oscillating bedplate, radially-adj ustable dogs moving in slots in said bed-plate and radiating from the center thereof, and a clamping-bar running laterally and centrally over said plate, of the' flan gin g-rollers.

4. In a boiler-head-fianging machine, the combination, with a vertically-oscillatin g bedplate, radially-adjustable dogs, and a clamping-bar, of the flanging-rollers, the upper one 5 of which can be oscillated, substantially as and for the purpose set forth.

5. The combination, in a boiler-headflanging machine, with the horizontally-revolving bed-plate having a circular boss extending to downward from the center thereof, of a screw journaled in the end pieces of the rectangular frame supporting the bed-plate and passing longitudinally and centrally through the boss of said bed-plate, which is tapped suitably to receive the same.

In testimony that I claim the foregoing as" my own I hereunto afiix my signature in pres- .ence of two witnesses.

. FREDRIGK L. KOLLBERG.

Witnesses:

JAMES H. COYNE.

FRANK D. THOMASON. 

